fix(compiler): TestBed.overrideProvider should keep imported NgModules eager (#19624)

Before, as soon as a user called `TestBed.overrideProvider` for a provider
of a `NgModule` that was imported via `TestBed.configureTestingModule`,
that `NgModule` became lazy.

This commit changes this behavior to keep the `NgModule` eager,
with or without a call to `TestBed.overrideProvider`.

PR Close #19624

packages/core/testing/src/test_bed.ts

@@ -467,7 +467,7 @@ export class TestBed implements Injector {
       }
       return [depFlags, depToken];
     });
-    overrideProvider({token, flags, deps, value});
+    overrideProvider({token, flags, deps, value, deprecatedBehavior: deprecated});
   }
 
   createComponent<T>(component: Type<T>): ComponentFixture<T> {